Commit Graph

17497 Commits

Author SHA1 Message Date
Denys Vlasenko
282b61a649 seedrng: prepare read_new_seed() to not need a "success" retval
We do not expect /dev/[u]random to be not openable/readable.
If they are, just bail out (something is obviously very wrong).

function                                             old     new   delta
seedrng_main                                        1077    1076      -1
.rodata                                           104939  104929     -10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30 15:25:55 +02:00
Denys Vlasenko
0fa16fc7a2 seedrng: do not try to continue on unexpected errors (just exit)
function                                             old     new   delta
.rodata                                           104946  104938      -8
seedrng_main                                        1225    1077    -148
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-156)           Total: -156 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30 15:17:32 +02:00
Denys Vlasenko
002d6ee46d ifplugd: split -a into -a and -A, latter disables upping in iface creation
-a meant both "don't up iface before each link detection" and "don't up iface
when it newly appears". But they are not the same.

I have a dock station where eth1 appears when I attach the notebook to it
(looks like it's hanging off a USB bus). IOW: appearance of this interface
is functionally equivalent to attaching ethernet cable.
ifplugd meant to be able to *automatically* handle this case.
Currently, with -a, it couldn't: newly appearing iface stayed down,
user had to manually up it.

function                                             old     new   delta
packed_usage                                       34253   34296     +43
.rodata                                           104876  104877      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 44/0)               Total: 44 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-30 14:33:14 +02:00
Denys Vlasenko
8456c21c09 seedrng: chdir to the SEED_DIRECTORY - avoid concat_path_file's
function                                             old     new   delta
seedrng_main                                        1273    1225     -48

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27 17:53:12 +02:00
Denys Vlasenko
c82a0cd2b0 seedrng: shorten strings
function                                             old     new   delta
.rodata                                           104894  104876     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27 17:33:15 +02:00
Denys Vlasenko
401356511c seedrng: remove unnecessary zero-filling of local variables
function                                             old     new   delta
seedrng_main                                        1292    1273     -19

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27 17:20:43 +02:00
Denys Vlasenko
6da9947358 seedrng: remove unnecessary zero-filling of local variables
function                                             old     new   delta
seedrng_main                                        1323    1292     -31

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27 17:09:38 +02:00
Denys Vlasenko
137b205722 seedrng: shrink --help text
function                                             old     new   delta
packed_usage                                       34280   34253     -27

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27 16:54:18 +02:00
Denys Vlasenko
0cdd6f5792 libbb: fix fallout from nth_string() robustification, closes 14726
function                                             old     new   delta
parse_common                                         187     228     +41

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-04-27 15:33:55 +02:00
Bernhard Reutner-Fischer
7fbfb2050f kbuild: Prefer -Oz over -Os
-Oz Optimize aggressively for size rather than speed.

with gcc-12 so far (i think only https://gcc.gnu.org/PR32803 and 103773 )
"shorter load imm on x86_64":
(add/remove: 0/0 grow/shrink: 4/1670 up/down: 6/-13196)    Total: -13190 bytes
   text	   data	    bss	    dec	    hex	filename
 975753	   4227	   1816	 981796	  efb24	busybox_old
 962442	   4227	   1816	 968485	  ec725	busybox_unstripped

with clang-15:
(add/remove: 394/34 grow/shrink: 161/1856 up/down: 18644/-98946)Total: -80302 bytes
   text	   data	    bss	    dec	    hex	filename
1120994	  16066	   1696	1138756	 116044	busybox_old
1040689	  16026	   1696	1058411	 10266b	busybox_unstripped

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-24 19:18:57 +02:00
Jason A. Donenfeld
05c366a560 seedrng: prune header includes
Remove redundant includes.
We have platform specific handling in libbb.h and platform.h so we can
handle quirks in a central place.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-24 10:03:59 +02:00
Jason A. Donenfeld
f9ea8ba5ed seedrng: code-golf even smaller
Since we're passing 0 as the timeout, we don't need safe_poll. Remove
cleanup at end of program, since OS does that, which lets us simplify
control flow. Factor repeated function calls into ternary loop.

function                                             old     new   delta
seedrng_main                                        1061    1459    +398
seed_from_file_if_exists                             468       -    -468
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/0 up/down: 398/-468)          Total: -70 bytes
   text    data     bss     dec     hex filename
1052781   16515    1816 1071112  105808 busybox_old
1052711   16515    1816 1071042  1057c2 busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-24 10:01:07 +02:00
Bernhard Reutner-Fischer
831c754c91 kbuild: fix building sha256
Pass down the correct EXTRA_CFLAGS to the compiler driver when building
assembler source.
Otherwise building busybox for a multilib other than the default failed
to link since hash_md5_sha256_x86-64_shaNI.o and
hash_md5_sha_x86-64_shaNI.o were built for the default arch which might
not what we requested in the EXTRA_CFLAGS.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-21 13:37:10 +02:00
Ron Yorston
c93eb1a95b vi: fix backspace over tab in commands
Colon and search commands are entered on the status line.  Since
the cursor position wasn't being tracked backspacing over a tab
resulted in a mismatch between the actual and apparent content
of the command.

function                                             old     new   delta
get_input_line                                       178     180      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 2/0)                 Total: 2 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 16:06:04 +02:00
Jason A. Donenfeld
57fea029cc seedrng: compress format strings with %s arguments
- Avoid an xstrdup call with seed_dir.
- Compress format strings with %s arguments.
- Open /dev/urandom for add entropy ioctl rather than /dev/random, so that
  /dev/random is only used for the already-sightly-flawed poll() check for
  creditability.

function                                             old     new   delta
seedrng_main                                         948     958     +10
seed_from_file_if_exists                             410     417      +7
.rodata                                           108338  108206    -132
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 17/-132)          Total: -115 bytes
   text	   data	    bss	    dec	    hex	filename
 975829	   4227	   1816	 981872	  efb70	busybox_old
 975714	   4227	   1816	 981757	  efafd	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:43:04 +02:00
Jason A. Donenfeld
3cb40f89de seedrng: avoid needless runtime strlen() call
- Avoid needless runtime strlen() call, bloating binary.
- Replace failed seed string with series of nulls.

function                                             old     new   delta
.rodata                                           108350  108338     -12
static.seedrng_prefix                                 26       -     -26
seedrng_main                                        1000     948     -52
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/2 up/down: 0/-90)             Total: -90 bytes
   text	   data	    bss	    dec	    hex	filename
 975919	   4227	   1816	 981962	  efbca	busybox_old
 975829	   4227	   1816	 981872	  efb70	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:43:00 +02:00
Jason A. Donenfeld
ce9a345632 seedrng: use predefined strings where possible
- Use predefined strings where possible.
- Open /dev/random with O_RDONLY for ioctl().

function                                             old     new   delta
seed_from_file_if_exists                             413     410      -3
.rodata                                           108407  108350     -57
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-60)             Total: -60 bytes
   text	   data	    bss	    dec	    hex	filename
 975979	   4227	   1816	 982022	  efc06	busybox_old
 975919	   4227	   1816	 981962	  efbca	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:43:00 +02:00
Jason A. Donenfeld
398bb3861a seedrng: further reduce size
- Remove all games with errno to further reduce code size.
- Combine error messages that don't benefit from being separated.
- Lock directory fd instead of separate file.

function                                             old     new   delta
static.longopts                                       38      26     -12
seed_from_file_if_exists                             426     413     -13
packed_usage                                       34519   34480     -39
.rodata                                           108484  108407     -77
seedrng_main                                        1088    1000     -88
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/5 up/down: 0/-229)           Total: -229 bytes
   text	   data	    bss	    dec	    hex	filename
 976208	   4227	   1816	 982251	  efceb	busybox_old
 975979	   4227	   1816	 982022	  efc06	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:43:00 +02:00
Jason A. Donenfeld
3c60711f83 seedrng: remove some global variables
- Remove global variables and pass dfd by value, opened once instead of
  twice, which shaves off some more bytes.

function                                             old     new   delta
seedrng_main                                        1086    1088      +2
seed_dir                                               8       -      -8
non_creditable_seed                                    8       -      -8
lock_file                                              8       -      -8
creditable_seed                                        8       -      -8
seed_from_file_if_exists                             456     426     -30
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 1/1 up/down: 2/-62)             Total: -60 bytes
   text	   data	    bss	    dec	    hex	filename
 976236	   4227	   1848	 982311	  efd27	busybox_old
 976208	   4227	   1816	 982251	  efceb	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:43:00 +02:00
Jason A. Donenfeld
31ec481baf seedrng: hoist bb_strtoul out of min/max
- Hoist bb_strtoul out of min/max to prevent quadruple evaluation.
- Don't use separate variables for boottime/realtime.
- Make use of ENABLE_FEATURE_CLEAN_UP where appropriate.
- Order hash initialization after lock taking per Bernhard's taste.
- Add comment description of theory of operation.

function                                             old     new   delta
seed_from_file_if_exists                             533     456     -77
seedrng_main                                        1218    1086    -132
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-209)           Total: -209 bytes
   text	   data	    bss	    dec	    hex	filename
 976445	   4227	   1848	 982520	  efdf8	busybox_old
 976236	   4227	   1848	 982311	  efd27	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:42:53 +02:00
Jason A. Donenfeld
4538578996 seedrng: use libbb functions
- Make extensive use of libbb.h functions, which simplify a lot of code
  and reduce binary size considerably.
- Use the already existing PID_FILE_PATH variable.

function                                             old     new   delta
seed_from_file_if_exists                             697     533    -164
.rodata                                           108665  108484    -181
seedrng_main                                        1463    1218    -245
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-590)           Total: -590 bytes
   text	   data	    bss	    dec	    hex	filename
 977035	   4227	   1848	 983110	  f0046	busybox_old
 976445	   4227	   1848	 982520	  efdf8	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:22:55 +02:00
Jason A. Donenfeld
4b407bacd4 seedrng: import SeedRNG utility for kernel RNG seed files
The RNG can't actually be seeded from a shell script, due to the
reliance on ioctls and the fact that entropy written into the
unprivileged /dev/urandom device is not immediately mixed in, making
subsequent seed reads dangerous. For this reason, the seedrng project
provides a basic "C script" meant to be copy and pasted into projects
like Busybox and tweaked as needed: <https://git.zx2c4.com/seedrng/about/>.

The SeedRNG construction has been part of systemd's seeder since
January, and recently was added to Android, OpenRC, and Void's Runit,
with more integrations on their way depending on context. Virtually
every single Busybox-based distro I have seen seeds things in wrong,
incomplete, or otherwise dangerous way. For example, fixing this issue
in Buildroot requires first for Busybox to have this fix.

This commit imports it into Busybox and wires up the basic config. The
utility itself is tiny, and unlike the example code from the SeedRNG
project, we can re-use libbb's existing hash functions, rather than
having to ship a standalone BLAKE2s, which makes this even smaller.

function                                             old     new   delta
seedrng_main                                           -    1463   +1463
.rodata                                           107858  108665    +807
seed_from_file_if_exists                               -     697    +697
packed_usage                                       34414   34519    +105
static.longopts                                        -      38     +38
static.seedrng_prefix                                  -      26     +26
seed_dir                                               -       8      +8
non_creditable_seed                                    -       8      +8
lock_file                                              -       8      +8
creditable_seed                                        -       8      +8
applet_names                                        2747    2755      +8
applet_main                                         3192    3200      +8
------------------------------------------------------------------------------
(add/remove: 9/0 grow/shrink: 4/0 up/down: 3184/0)           Total: 3184 bytes
   text	   data	    bss	    dec	    hex	filename
 973776	   4219	   1816	 979811	  ef363	busybox_old
 977035	   4227	   1848	 983110	  f0046	busybox_unstripped

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2022-04-20 15:20:29 +02:00
Ron Yorston
fc7868602e vi: improved handling of backspace in replace mode
In replace mode ('R' command) the backspace character should get
special treatment:

- backspace only goes back to the start of the replacement;
- backspacing over replaced characters restores the original text.

Prior to this commit BusyBox vi deleted the characters both before
and after the cursor in replace mode.

function                                             old     new   delta
undo_pop                                               -     235    +235
char_insert                                          858     884     +26
indicate_error                                        81      84      +3
find_range                                           654     657      +3
static.text_yank                                      77      79      +2
do_cmd                                              4486    4243    -243
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 4/1 up/down: 269/-243)           Total: 26 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-03-04 22:57:05 +01:00
Denys Vlasenko
55f969a006 taskset: fix printf format mismatch in !FEATURE_TASKSET_FANCY config. closes 14616
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-03-01 10:49:17 +01:00
Denys Vlasenko
5fe20cf321 ash: do not truncate failed tilde expansion on unknown user names
Do not skip over "*p = c;" statement.

Testcase: echo ~~nouser/qwe

function                                             old     new   delta
argstr                                              1396    1406     +10

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-03-01 10:10:22 +01:00
Denys Vlasenko
7750b5a25a ash: fix unsafe use of mempcpy
function                                             old     new   delta
subevalvar                                          1549    1557      +8

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-03-01 09:56:54 +01:00
Sören Tempel
fa52ac9781 ash: don't read past end of var in subvareval for bash substitutions
Without this patch, BusyBox handles bash pattern substitutions without
a terminating '/' character incorrectly.

Consider the following shell script:

	_bootstrapver=5.0.211-r0
	_referencesdir="/usr/${_bootstrapver/-*}/Sources"
	echo $_referencesdir

This should output `/usr/5.0.211/Sources`. However, without this patch
it instead outputs `/usr/5.0.211Sources`. This is due to the fact that
BusyBox expects the bash pattern substitutions to always be terminated
with a '/' (at least in this part of subvareval) and thus reads passed
the substitution itself and consumes the '/' character which is part of
the literal string. If there is no '/' after the substitution then
BusyBox might perform an out-of-bounds read under certain circumstances.

When replacing the bash pattern substitution with `${_bootstrapver/-*/}`,
or with this patch applied, ash outputs the correct value.

Signed-off-by: Sören Tempel <soeren@soeren-tempel.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-03-01 08:47:43 +01:00
Denys Vlasenko
1891fdda59 libbb/sha1: update config help text with new performance numbers
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-18 17:09:51 +01:00
Denys Vlasenko
c2e7780e52 libbb/sha256: explicitly use sha256rnds2's %xmm0 (MSG) argument
Else, the code seemingly does not use MSG.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-12 00:52:12 +01:00
Denys Vlasenko
1f272c06d0 whitespace fixes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-11 23:03:27 +01:00
Denys Vlasenko
dda77e8376 libbb/sha1: revert last commit: pshufb is a SSSE3 insn, can't use it
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-11 14:53:26 +01:00
Denys Vlasenko
8154146be4 libbb/sha1: shrink unrolled x86-64 code
function                                             old     new   delta
sha1_process_block64                                3481    3384     -97

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-11 06:08:27 +01:00
Denys Vlasenko
6f56fa1713 libbb/sha: improve comments
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-10 15:38:10 +01:00
Denys Vlasenko
6a6c1c0ea9 whitespace fix
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 11:29:23 +01:00
Denys Vlasenko
caa9c4f707 libbb/sha256: code shrink in x86 assembly
function                                             old     new   delta
sha256_process_block64_shaNI 32-bit                  676     673      -3
sha256_process_block64_shaNI 64-bit                  680     677      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 01:50:22 +01:00
Denys Vlasenko
11bcea7ac0 libbb/sha256: code shrink in 64-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         701     680     -21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 01:42:49 +01:00
Denys Vlasenko
461a994b09 libbb/sha256: code shrink in 32-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         697     676     -21

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 01:30:23 +01:00
Denys Vlasenko
c0ff0d4528 libbb/sha256: code shrink in 32-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         713     697     -16

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-09 00:33:39 +01:00
Denys Vlasenko
eb8d5f3b8f libbb/sha1: shrink x86 hardware accelerated hashing (32-bit)
function                                             old     new   delta
sha1_process_block64_shaNI                           511     507      -4

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 15:34:02 +01:00
Denys Vlasenko
eb52e7fa52 libbb/sha1: shrink x86 hardware accelerated hashing (32-bit)
function                                             old     new   delta
sha1_process_block64_shaNI                           517     511      -6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 15:23:26 +01:00
Denys Vlasenko
71a1cccaad libbb/sha1: shrink x86 hardware accelerated hashing
function                                             old     new   delta
sha1_process_block64_shaNI 32-bit                    524     517      -7
sha1_process_block64_shaNI 64-bit                    510     508      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 08:22:17 +01:00
Denys Vlasenko
4923f74e58 libbb/sha1: shrink unrolled x86-64 code
function                                             old     new   delta
sha1_process_block64                                3482    3481      -1
.rodata                                           108460  108412     -48
------------------------------------------------------------------------------
(add/remove: 1/4 grow/shrink: 0/2 up/down: 0/-49)             Total: -49 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-08 03:29:16 +01:00
Denys Vlasenko
c193cbd6df libbb/sha1: shrink and speed up unrolled x86-64 code
function                                             old     new   delta
sha1_process_block64                                3514    3482     -32

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-07 02:34:04 +01:00
Denys Vlasenko
987be932ed *: slap on a few ALIGN_PTR where appropriate
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 20:07:12 +01:00
Denys Vlasenko
ca466f385a *: slap on a few ALIGN* where appropriate
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"

function                                             old     new   delta
.rodata                                           108586  108460    -126
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-126)           Total: -126 bytes
   text	   data	    bss	    dec	    hex	filename
 970412	   4219	   1848	 976479	  ee65f	busybox_old
 970286	   4219	   1848	 976353	  ee5e1	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 19:53:10 +01:00
Denys Vlasenko
4f40735c87 libbb/sha256: code shrink in 32-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         722     713      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 00:56:13 +01:00
Denys Vlasenko
31c1c31077 libbb/sha256: code shrink in 64-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         706     701      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-06 00:33:42 +01:00
Denys Vlasenko
a1429fbb8c libbb/sha256: code shrink in 64-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         730     706     -24

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-03 15:17:42 +01:00
Denys Vlasenko
de6cb4bed8 libbb/sha256: code shrink in 32-bit x86
function                                             old     new   delta
sha256_process_block64_shaNI                         747     722     -25

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-03 15:11:23 +01:00
Denys Vlasenko
6472ac9428 libbb/sha256: optional x86 hardware accelerated hashing
64 bit:
function                                             old     new   delta
sha256_process_block64_shaNI                           -     730    +730
.rodata                                           108314  108586    +272
sha256_begin                                          31      83     +52
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 2/0 up/down: 1055/-1)          Total: 1054 bytes

32 bit:
function                                             old     new   delta
sha256_process_block64_shaNI                           -     747    +747
.rodata                                           104318  104590    +272
sha256_begin                                          29      84     +55
------------------------------------------------------------------------------
(add/remove: 5/1 grow/shrink: 2/0 up/down: 1075/-1)          Total: 1074 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2022-02-03 14:58:02 +01:00